Early parental death and psychosocial risk factors for dementia: A case-control study in Europe.

OBJECTIVES: To assess the association between early parental death and the risk of dementia in adult life and to examine the risk factors associated with early parental death in people with and without dementia. METHODS/DESIGN: A population-based case-control study of a sample of 65 997 participants from the Survey of Health, Ageing and Retirement in Europe study. Early parental death was operationalized as parental death at the age of ≤16 years. Main analyses were conducted using bivariate and multivariate logistic regression analyses. RESULTS: The odds ratio (OR) for dementia in individuals who experienced early parental death (father or mother) at the age of ≤16 years was 1.83 (95%CI 1.61-2.09) and 1.54 (95%CI 1.35-1.76) adjusted for age, gender and education. In the multivariate logistic regression analysis carried out with the whole sample, early parental death increased the risk of dementia (OR = 1.50, 95%CI 1.31-1.72), along with older age (OR = 5.92, 95%CI 4.86-7.17), neuroticism (OR = 2.94, 95%CI 2.61-3.31), low education level (OR = 1.84, 95%CI 1.64-2.05) and low income (OR = 1.49, 95%CI 1.34-1.67). DISCUSSION: Early parental death (≤16 years) was associated with an increased risk of dementia. We discuss the neurobiological markers associated with adverse childhood experiences (ACEs) and dementia as well as interventions to counteract the negative health effects on adults. J Am Geriatr Soc 68:-, 2020.

CAUSES, mortality rates and risk factors of death in community-dwelling Europeans aged 50 years and over: Results from the Survey of Health, Ageing and Retirement in Europe 2013-2015.

OBJECTIVE: To determine mortality rates and to rank the causes and predictors of mortality using a wide range of sociodemographic and clinical variables. MATERIALS AND METHODS: It is a prospective population-based cohort study of adults living in the community, 2013-15 N = 48,691, age ≥50; deceased = 1,944. Clinical and sociodemographic data were obtained from the Survey of Health, Ageing and Retirement in Europe SHARE: Age, Gender, Marital Status, Years of Schooling, Income, Loneliness, Cognition, Self-Rated Health, Diseases, Activities of daily living ADL, and Frailty. Mortality rates were calculated. A Cox proportional hazards model were used to determine risk-adjusted mortality ratios. RESULTS: The crude mortality rate was 18.39 (1000 person-years at risk), (99 % CI, 18.37-18.42). The factors most associated with an increased mortality risk were older age, lower self-rated health, lower cognition, male gender, ADL deficits, higher comorbidity, frailty and loneliness. The diseases with a higher mortality risk were: cancer (Hazard ratio, HR = 2.67), dementia (HR = 2.19), depressive symptoms (HR = 2.10), fractures (hip, femur) (HR = 1.57), stroke (HR = 1.55), chronic lung disease (HR = 1.52), diabetes (HR = 1.36) and heart attack (HR = 1.21). CONCLUSIONS: The main mortality risk factors, associated independently in the eight diseases were: older age, poor self-rated health, ADL deficits, male gender, lower cognition, comorbidity and the presence of depressive symptoms, with a different influence in the European regions. The need to evaluate and treat the depressive symptoms that accompanies diseases with higher risk of mortality is stressed.

Course of depressive symptoms and associated factors in people aged 65+ in Europe: A two-year follow-up.

BACKGROUND: The epidemiology of depressive disorders presents notable differences among European countries. The objectives of the study are to determine the prevalence, incidence, persistence and remission rates of depressive symptoms and to identify risk factors and differences between four European regions. METHOD: Prospective cohort design using data from waves 5 and 6 (2013-15) of the Survey of Health, Ageing and Retirement in Europe. Sample size included 31,491 non-institutionalized adults aged 65+. Depressive symptoms were assessed using the EURO-D. RESULTS: The prevalence of depressive symptoms (EURO-D ≥4) was 29.8% and 31.5%in waves 5 and 6, respectively. The risk factors associated depressive symptoms were poorer self-rated health, loneliness, impairment in ADL, female gender and financial difficulties. Incidence was 6.62 (99.9% CI: 6.61-6.63)/100 person-years and the persistence and remission rates were 9.22 and 5.78, respectively. Regarding the differences between European regions, the incidence (4.93 to 7.43) and persistence (5.14 to 11.86) rates followed the same ascending order: Northern, Eastern, Continental and Southern. The remission presented higher rates in the Eastern and Southern (6.60-6.61) countries than in the Northern and Continental (4.45-5.31) ones. LIMITATIONS: The EURO-D scale is unable to distinguish between clinically relevant depressive symptoms and major depression. CONCLUSION: The risk factors related to the incidence of depressive symptoms differed across European regions. In countries of eastern and southern Europe the most important predictors were female gender and impairment in ADL. Poorer self-rated health and older age were more relevant in the Northern countries, and chronic diseases were a key factor in the Continental region.

Discrepancies Between Alzheimer's Disease Patients' and Caregivers' Ratings About Patients' Quality of Life: A 1-year Observation Study in Brazil.

OBJECTIVES: We investigated the factors associated with discrepancies between patients' and caregivers' ratings about patients' general quality of life (QoL) and about the domains of Quality of Life in Alzheimer's disease (QoL-AD) Scale at baseline and 12 months. METHODS: This was a longitudinal study that comprised 114 outpatients with AD and their caregivers. Patients were assessed with the QoL-AD, Mini-mental State Examination, Assessment Scale of Psychosocial Impact of the Diagnosis of Dementia, Cornell Scale for Depression, Functional Activities Questionnaire, and Neuropsychiatric Inventory, and Clinical Dementia Rating Scale. Caregivers answered the QoL-AD, Zarit Burden Interview and Sociodemographic Questionnaire. RESULTS: Linear regression analyses indicated that the factors associated with discrepancies of patients' and caregivers' ratings of patients' QoL-AD were impaired awareness and caregiver burden at baseline and impaired awareness at 12 months. Moreover, the factor associated with discrepancies in the domain memory was impaired awareness and in the domain ability to do chores, impaired awareness and functional deficit. CONCLUSIONS: The discrepancies between patients and caregivers were related to awareness and caregiver burden at baseline and to awareness at 12 months. These results raise questions regarding the subjective nature of QoL and the validity of patients' evaluation of their own QoL.

Quality of life in people aged 65+ in Europe: associated factors and models of social welfare-analysis of data from the SHARE project (Wave 5).

PURPOSE: To analyse the clinical, sociodemographic and socioeconomic factors that influence perceived quality of life (QoL) in a community sample of 33,241 people aged 65+ and to examine the relationship with models of social welfare in Europe. METHODS: This was a cross-sectional study of data from Wave 5 (2013) of the Survey of Health, Ageing and Retirement in Europe (SHARE). The instruments used in the present study were as follows: sociodemographic data, CASP-12 (QoL), EURO-D (depression), indicators of life expectancy and suicide (WHO), and economic indicators (World Bank). Statistical analysis included bivariate and multilevel analyses. RESULTS: In the multilevel analysis, greater satisfaction in life, less depression, sufficient income, better subjective health, physical activity, an absence of functional impairment, younger age and participation in activities were associated with better QoL in all countries. More education was only associated with higher QoL in Eastern European and Mediterranean countries, and only in the latter was caring for grandchildren also related to better QoL. Socioeconomic indicators were better and QoL scores higher (mean = 38.5 ± 5.8) in countries that had a social democratic (Nordic cluster) or corporatist model (Continental cluster) of social welfare, as compared to Eastern European and Mediterranean countries, which were characterized by poorer socioeconomic conditions, more limited social welfare provision and lower QoL scores (mean = 33.5 ± 6.4). CONCLUSIONS: Perceived quality-of-life scores are consistent with the sociodemographic and clinical characteristics of participants, as well as with the socioeconomic indicators and models of social welfare of the countries in which they live.

Self-Perceived Quality of Life Among Patients with Alzheimer's Disease: Two Longitudinal Models of Analysis.

The objective was to analyze the factors that influence self-perceived quality of life (QoL) in patients with Alzheimer's disease (AD), contrasting two different longitudinal models. A total of 127 patients were followed up over 24 months. The instruments applied were: Quality of Life in Alzheimer's Disease scale (QoL-AD), Geriatric Depression Scale-15, Anosognosia Questionnaire-Dementia, Disability Assessment in Dementia, Neuropsychiatric Inventory, and the Mini-Mental State Examination. Two models for grouping patients were tested: 1) Baseline score on the QoL-AD (QoL-Baseline), and 2) Difference in QoL-AD score between baseline and follow-up (QoL-Change). Generalized estimating equations were used to analyze longitudinal data, and multinomial regression analyses were performed. Over the follow-up period the QoL-Baseline model showed greater variability between groups (Wald χ2 = 172.3, p < 0.001) than did the QoL-Change model (Wald χ2  = 1.7, p = 0.427). In the QoL-Baseline model the predictive factors were greater depression (odds ratio [OR] = 1.20; 95% CI: 1.00- 1.45) and lower functional ability (OR = 0.92; 95% CI: 0.85- 0.99) for the Low QoL group (< 33 QoL-AD), and less depression (OR = 0.68; 95% CI: 0.52- 0.88), more anosognosia (OR = 1.07; 95% CI: 1.01- 1.13), and fewer neuropsychiatric symptoms (OR = 0.95; 95% CI: 0.91- 0.99) for the High-QoL group (>37 QoL-AD). The model based on baseline scores (QoL-Baseline) was better than the QoL-Change model in terms of identifying trajectories and predictors of QoL in AD.

Factors associated with caregiver burden: comparative study between Brazilian and Spanish caregivers of patients with Alzheimer's disease (AD).

BACKGROUND: Transcultural studies regarding the comparison of levels of burden in caregivers of patients with Alzheimer's disease (AD) from Europe and Latin America are rare. We designed this study to investigate the differentiating factors associated with burden in Brazilian and Spanish caregivers of patients with AD. METHODS: This is a cross-sectional study composed by samples of outpatients with AD and their caregivers from Brazil (n = 128) and Spain (n = 146). Caregivers answered the Zarit Burden Interview (ZBI) and a Sociodemographic Questionnaire. Patients were assessed with the Mini-Mental State Examination (MMSE), Functional Activities Questionnaire (FAQ), Disability Assessment for Dementia (DAD), Neuropsychiatric Inventory (NPI), and Clinical Dementia Rating (CDR) Scale. RESULTS: In the multivariate regression analysis, high burden levels were reported in Brazil, when caregivers were female (p = 0.025) and when patients did not attend Day Care Center (p = 0.025). In Spain, high burden levels were associated with living with the patient (p = 0.014), younger caregivers (p = 0.003), and participation of patients at Day Care Center (p = 0.046). Also, different neuropsychiatric symptoms explained high burden levels: in Brazil, depression (p < 0.001) and anxiety (p = 0.024) and, in Spain, apathy/indifference (p < 0.001), agitation/aggression (p = 0.019) and irritability/lability (p = 0.027). CONCLUSIONS: Caregivers' gender, patients who attended Day Care Center and neuropsychiatric symptoms were differentiating factors in the burden of Brazilian and Spanish caregivers.

Effects of anosognosia and neuropsychiatric symptoms on the quality of life of patients with Alzheimer's disease: a 24-month follow-up study.

OBJECTIVES: Neuropsychiatric symptoms and anosognosia are known to influence the perceived quality of life of patients (QoL-p) with Alzheimer's disease (AD). This study analysed their impact on patient and caregiver ratings of QoL-p and how these ratings changed in relation to the severity of dementia. METHODS: A baseline sample of 221 patients and caregivers was followed up over 24 months. Instruments: Neuropsychiatric Inventory (NPI), Anosognosia Questionnaire-Dementia (AQ-D), Quality of life-Alzheimer's Disease (QoL-AD) and the Global Deterioration Scale (GDS). Longitudinal data were analysed using generalized linear models. RESULTS: In the multivariate analysis, greater anosognosia was always associated with higher ratings of QoL-p among patients, especially at 24 months (p < 0.001), and with more negative ratings among caregivers, especially at baseline (p < 0.001). A higher total NPI score was associated with a more negative rating of QoL-p among caregivers (p < 0.001), and it also had a smaller negative effect on patients' self-ratings (p = 0.001). The neuropsychiatric symptoms (NPI) associated with a more negative view of QoL-p were depression, for patients' self-ratings, and apathy and agitation for caregiver ratings. The discrepancy between patient and caregiver ratings increased in line with the severity of dementia. CONCLUSION: Neuropsychiatric symptoms had a similarly negative effect on the QoL-p ratings of both patients and caregivers, whereas the effect of anosognosia differed according to the rater (positive for patients, negative for caregivers).

Three-year trajectories of caregiver burden in Alzheimer's disease.

Although numerous studies have examined caregiver burden in the context of Alzheimer's disease, discrepancies remain regarding the influence of certain factors. This study aimed to identify trajectories of caregiver burden in the context of Alzheimer's disease, as well as the factors associated with them. A cohort of patients and caregivers (n = 330) was followed up over three years. Growth mixture models were fitted to identify trajectories of caregiver burden according to scores on the Zarit Burden Interview (ZBI). A multilevel multinomial regression analysis was then conducted with the resulting groups and the patient and caregiver factors. In the sample as a whole, burden increased during follow-up (F = 4.4, p = 0.004). Three groups were identified: G1 (initially high but decreasing burden), G2 (moderate but increasing burden), and G3 (low burden that increased slightly). Patients in G1 and G2 presented more neuropsychiatric symptoms and poorer functional status than did those in G3. Caregivers in G1 and G2 had poorer mental health. Spouses and, especially, adult children who lived with their parent (the patient) were more likely to belong to G2 (odds ratio [OR] 6.24; 95% CI 2.89-13.47), as were sole caregivers (OR 3.51; 95% CI 1.98-6.21). The patient factors associated with increased burden are neuropsychiatric symptoms and functional status, while among caregivers, being the sole carer, poor mental health, and living with the patient are of relevance.

Severity of dementia, anosognosia, and depression in relation to the quality of life of patients with Alzheimer disease: discrepancies between patients and caregivers.

OBJECTIVE: To investigate the factors associated with discrepancies between patient and caregiver reports of the quality of life of patients (QoLp) with Alzheimer disease. METHODS: Cross-sectional analytic study of 141 patients and their caregivers. The instruments used were the Quality of Life in AD, the Global Deterioration Scale (GDS), the Geriatric Depression Scale, and the Anosognosia Questionnaire-Dementia. Differences were analyzed according to GDS stage. A linear regression analysis was conducted using the difference between the absolute QoLp scores of patients and caregivers. A cluster analysis involving patient variables was then performed. RESULTS: The discrepancy between patient and caregiver QoLp ratings increased in line with GDS stages (χ(2) (2) = 8.7, p = 0.013). In the regression model (F [7,133] = 16.6, p <0.001; R(2) = 0.477), discrepancies in QoLp reports were associated with greater anosognosia, less depression, and a better cognitive status in patients and with female gender among caregivers. The cluster analysis showed that patients with the lowest ratings of QoLp had a better cognitive status, more depression, and less anosognosia. Conversely, the highest ratings were given by patients with a poorer cognitive status, less depression, and greater anosognosia. CONCLUSIONS: The factors associated with greater discrepancies between patient and caregiver ratings of QoLp were severity of dementia, anosognosia, depression, and cognitive status in patients and female gender in caregivers. In patients with advanced dementia, greater anosognosia leads to more positive ratings in QoLp and complementary observations are required.

Discrepancies regarding the quality of life of patients with Alzheimer's disease: a three-year longitudinal study.

Cross-sectional studies report notable discrepancies between patient and caregiver ratings of the quality of life of patients (QoL-p) with Alzheimer's disease (AD). This study aimed to identify the factors associated with any changes in QoL-p ratings and any discrepancies between patient and caregiver ratings of QoL-p. Three-year follow-up of a cohort of non-institutionalized patients (n = 119). QoL-p was assessed by the Quality of Life in AD (QoL-AD) scale. We analyzed the influence of functional and cognitive status and behavioral problems in patients, and burden and mental health in caregivers. Repeated measures analysis was applied to the scores of patients and caregivers on the QoL-AD, and to the discrepancies between them. Generally, patients' own ratings remained stable over time (F3,116 = 0.9, p = 0.439), whereas caregiver ratings showed a decline (F3,116 = 9.4, p < 0.001). In the analysis of discrepancies, patients with anosognosia gave higher ratings (F1,117 = 11.9, p = 0.001), whereas caregiver ratings were lower when the patient showed greater agitation (F1,117 = 13.0, p < 0.001), apathy (F1,117 = 15.4, p < 0.001), and disabilities (F1,117 = 17.1, p < 0.001), and when the caregiver experienced greater burden (F1,117 = 9.0, p = 0.003) and worse mental health (F1,117 = 10.1, p = 0.003). Patient ratings of QoL-p remain generally stable over time, whereas those of caregivers show a decline, there being significant discrepancies in relation to specific patient and caregiver factors.

Factors associated with the variability in caregiver assessments of the capacities of patients with Alzheimer disease.

BACKGROUND: Several studies have identified certain caregiver factors that can produce variability in their assessments of the capacities of patients with Alzheimer disease (AD). OBJECTIVES: To identify the caregiver variables associated with variability in their ratings of patients' capacities. METHODS: Consecutive sample of 221 outpatients with AD and their family caregivers. The capacities evaluated by caregivers were the degree of functional disability, using the Disability Assessment for Dementia (DAD); psychological and behavioral symptoms, via the Neuropsychiatric Inventory (NPI); anosognosia, with the Anosognosia Questionnaire-Dementia (AQ-D); and quality of life, using the Quality of Life in AD (QOL-AD). The relationship between these measures and caregiver's gender, burden, depression, and health was analyzed by means of a bivariate analysis, calculating the effect size (Cohen d) and subsequently by a regression analysis, calculating the contribution coefficient (CC). RESULTS: The greatest variability in caregiver assessments was observed in relation to patients with early-stage dementia, where caregiver's burden was the main factor associated with a more negative evaluation (d = 1.02-1.25). Depression in the caregiver was associated with less variability and only in the assessments of patients with moderate dementia (d = 0.38-0.69). In the regression analysis, caregiver factors were associated with greater variance in scores on the NPI (CC = 37.4%) and QOL-AD (CC = 27.2%), and lower variance in AQ-D (CC = 21.6%) and DAD (CC = 10.3%) scores. CONCLUSIONS: Caregiver's burden and depression were associated with more negative assessments of patients' psychological and behavioral symptoms and quality of life.

Clinical differences in patients with Alzheimer's disease according to the presence or absence of anosognosia: implications for perceived quality of life.

This study aimed to determine the factors that predict anosognosia in patients with Alzheimer's disease (AD) and to examine the effect of anosognosia on patient and caregiver perceptions of the patient's quality of life (QoL-p), using a cross-sectional design with 164 patients and their caregivers. Instruments of measurement included Anosognosia Questionnaire-Dementia, Geriatric Depression Scale, Quality of Life in AD (QoL-AD), Disability Assessment for Dementia, Neuropsychiatric Inventory, and the Global Deterioration Scale (GDS). A binary logistic regression analysis was performed to identify the factors that predict anosognosia, while a linear regression analysis was conducted to determine the factors associated with QoL-AD. The degree of anosognosia increased in line with GDS stage (F (2,161) = 41.3, p < 0.001). In the binary regression analysis, the variables that predicted anosognosia were more neuropsychiatric symptoms (OR = 1.11, 95% CI: 1.06-1.17, p < 0.001), deficits in ADL (OR = 0.88, 95% CI: 0.83-0.94, p < 0.001), less depression (OR = 0.66, 95% CI: 0.54-0.82, p < 0.001), and older age (OR = 1.08, 95% CI: 1.00-1.15, p = 0.027). With regards to QoL-p, the multiple linear regression analysis for patients (r2 = 0.486) showed that less depression (ß = -0.52, p < 0.001) and greater anosognosia (ß = 0.40, p < 0.001) explained 33% and 10% of the variance in QoL-AD, respectively. Greater anosognosia was associated with better perceived QoL-p, especially in advanced GDS stages. Anosognosia was associated with greater caregiver burden and a greater discrepancy between patient and caregiver ratings of QoL-p.

Predictors of cognitive decline in Alzheimer's disease and mild cognitive impairment using the CAMCOG: a five-year follow-up.

BACKGROUND: There are discrepant findings regarding which subscales of the Cambridge Cognitive Examination (CAMCOG) are able to predict cognitive decline. The study aimed to identify the baseline CAMCOG subscales that can discriminate between patients and predict cognitive decline in Alzheimer's disease (AD) and mild cognitive impairment (MCI). METHODS: This was a five-year case-control study of patients with cognitive impairment and a control group. Participants were grouped into AD (n = 121), MCI converted to dementia (MCI-Ad, n = 43), MCI-stable (MCI-St, n = 66), and controls (CTR, n = 112). Differences in the mean scores obtained by the four groups were examined. Receiver operating characteristic curves were used to compare subscale scores in the AD and MCI-Ad groups with those of controls. The influence of age, gender, schooling, and depression on baseline subscale scores was assessed. RESULTS: Of the CAMCOG subscales, Orientation and Memory (learning and recent) (OR + MEM) showed the highest discriminant capacity in the baseline analysis of the four groups. This baseline analysis indicated that OR + MEM was the best predictor of conversion to AD in the MCI-Ad group (area under the curve, AUC = 0.81), whereas the predictive capacity of the global MMSE and CAMCOG scores was poor (AUC = 0.59 and 0.53, respectively). CONCLUSIONS: In the baseline analysis, the Orientation and Memory (learning and recent) subscales showed the highest discriminant and predictive capacity as regards both cognitive decline in the AD group and conversion to AD among MCI-Ad patients. This was not affected by age, gender, schooling, or depression.